Peters



@mungitura atmt @ffice GERGE NI-MMO, OF JERSEY CITY, NEW JERSEY. LettersPatent No. 65,110, dated llay 28, 1867.

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` TO ALL WIIOM I'I HAY CONGERN:

Be it known that I, GEORGE NIMMO, of Jersey City, in the county ofHudson, and State of New Jersey, have invented and made a certain newand useful Improvement in Furnaces for Heating and Welding; and I dohereby declare the following to be a full, clear, and exact 4descriptionof the same, reference being had to the annexed drawing, making part ofthis specification, wherein- Figurel is an elevation of said furnace.

Figure 2 is a longitudinal section and Figure 3 is a plan of the samesectionally, at the line x n; of fig. 1.

Similar marks of reference denote the same parts.

Furnaces for heating and Welding by the saine lire have been constructedbefore, as may be seen by referencelto Letters Patent granted to Gr.Nimmo and R. S. Stanton, June 14, 1864. In this, however, a separatechamber is provided, adjacent to the re, for heating the metal to awelding heat, and another one, further olf, for heating purposes. I haveconstructed my furnace with a View to economizinl heat, by bringing theheatingchamhcr nearer to the re, and providing an opening or openingsinto the furnace at'the end of the fireehamber, so as 'to employ thedirect action ofthe fire upon the articles to be welded, which areintroduced upon or within the incandescent fuel.

In thedrawing, a is the lire-chamber, and b the heating-chamberg c isthe escape flue to a chimney of anyV desired character. The walls of thefurnace are properly built and sustained with plates and buckstaves withtie-bolts, and ythe hearth and crown, as well as the entire interiorportions, are lined with fire-brick. The end Wall of the furnace isprovided with an opening, nl, for the introduction of fuel, and the sidewall has the openings e c, to give access to the heating-chamber 6, andto these, slidesror doors are to he provided. I form an opening in thewall at the end of the furnace, as at f, through which articles to beWelded are inserted amongst the incandescent fuel, or-over the same.Bythis construction the fuel is economized, because the articles to bewelded, coming into contact with the fuel, are heated much more rapidlythan they would be bythe fiame alone, and the articles to be heated, forrollin` or otherwise Working, which are placed ou the hearth of thechamber b, are more rapidly heated, because they are much nearer thefire. The tuyerc 7L, supplying air to the fire, is introduced throughthe end wall; and the cindcrs and refuse from the fuel are removed, whennecessary, through a holemade in thevbrick-work. A door maybe put in theend Wall, at the opposite end of the heating-chamber to the fire, ifdesired, so as to give greater access to that heating-chamber, forallowingthe introduction of longer articles.

What I claim, and desire to secure by Letters Patent, is y The Weldingand heating-furnace, formed with the heating-chamber lire andWeldingfchambcr a, and openings d, e e, land f, inthe manner and for thepurposes set forth.

In Witness whereof I have hereunto set my signature lthis 187th day ofOctober, A. D. 1866./

encuen NIMMo.

Witnesses:

Gnus. H. SMITH, Geo. D. WALKER.

